Self-locking slider for multiple fasteners



2 Sheets-Sheet 1 H. o. KROLL Filed Dec. 31, 1934 a z a a 4 v /////7 r T E \27/4 \5. H /7/////// 4 E p 6 pm 4: 4 4. J .4 a 6 M/ i 2 SELF LOCKING SLIDER FOR MULTIPLE FASTENERS Feb. 23, 1937.

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' H. D. KROLL SELF LOCKING SLIDER FOR MULTIPLE FASTENERS Feb. 23,1937.

Filed Dad. 31, 19:54 ZShuts-Sheet 2 HARRY DAV/D KROLL ATTORNEYS,

Patented' Feb. '23, 193':

UNITED STATES PATENT OFFICE v Harry 1mm mu. m Anseles. Calif. Application December 31, 1934; Serial No. 15am 6 Claims. (01. 24-205) This invention relates to an improved selflocking slider for multiple fasteners, and the present application shows an improvement over this same inventor's prior application for patent on locking means for multiple fastener sliders", flied July 27, 1934, Serial No. 737,254, now Patent No. 2,055,903, granted Sept. 29, 1936.

One of the important objects of this invention 'is to provide an automatic self-locking slider for 10 use with multiple fasteners and which eliminates in a satisfactory manner the usual pull-tab.

Another important object of the invention is the provision in a self-locldng slider for multiple fasteners or the like of a key-operated locking 15 means which is independent of the self-locking element and which, like the self-locking element, can be formed to operate on either one or both sides of the fasteners or the line of juncture between the cooperating elements.

Another and further important object of the invention is the provision of a more com'pact slider element for a multiple fastener construction which shall include a locking means either automatic or key-operated or both and which 25 shall also include a manually-operated element for withdrawing the self-locking latch, which.

manually-operated element can be fastened in locked position by means of a key.

Other and further important objects of the inso 'vention will be apparent from the disclosures in the accomp ny ng drawings and following speciiication.

The invention, in a preferred form, is illustrated in the drawings and hereinafter more fully '85 described.

In thedrawings:

Figure 1 is a top plan view of the improved selflocking slider of this invention, showing the same as applied to the multiple fastener con- I 40 struction.

Figure 2 is a view somewhat similar to Figure 1, showing additionally a key-operated structure which can be used either as a separate locking element or as a locking means for the device 4J5 shownin Figure 1.

Figure 3 is a sectional view taken on the line 3-3 of Figure 1, looking in the direction indicated by the arrows. Figure 4 is a sectional view on the line 4-4 of 60 Figure 2 looking in the direction indicated.

Figure 5 is a sectional view taken on the line 5-5 of Figure 2, looking in the direction indi-' Figure 8 is a top plan view of the device shown 55 in Figure 2 with the cover removed.

Figure 7 is an exploded view, showing the keyoperated locking structure.

Figure 8 is an exploded view, showing the manually operated or self-locking structure.

Figure 9 is a top plan view of the structure of 5 Figurev '7, showing the same assembled and in locking position.

Figure 10 is a top plan view of the structure of Figure 8, parts being. broken away and showing the same in released position. 10

As shown in the drawings? The reference numeral ill indicates generally I the casing of the improved locking slider of this invention and shows the same as applied to a set of multiple fasteners l2l4 which are fixed to opposed edges of cloth or other material l8i8 adapted to be joined together by the fasteners.

A manually. operated latching release element '20 is pivotally mounted in the casing In for operation by the thumb of the user, and in Figure 2, the casing 10 is shown with a key-hole 22 adapted for the insertion of a key which operates a further looking or latching element.

As best shown in Figures3 and 6, the manuallyoperated latching element comprises essentially a a metal plate" having an inwardly turned end 26 which is adapted to penetrate between any two of the fastener elements l4, thereby preventing the housing It with its appurtenances from motion relatively to the fastener elements l2-l4.

A leaf-spring II normally impels the element 24 with its locking pin 24 into locking relationship with the fastener .elements l2l4.

The locking structure 24 and the spring 2! are fastened about a pin 30 which through. the casing l0, and this pin also furnishes a pivotal mounting for the manually-operated'release element 2!. This manuallyeoperated eleinent coni-' prises a sort of box-like structure open at its inner face and normally impelled outwardly by 0 means of a coiled spring 32 positioned about the Pin 30."

One inner face of the releaseelement II is cam-shaped as best shown at 34 in Figure 5 so that inwardmotion of the element 24 moves the looking plate il-with its pin 24 upwardly out of I locking relationship with the elements l4.

.Also positioned in the casing Ila is a key-operated locking structure which comprises essentially a latching element having a projection a adaptedyto-enter between any two of the fasteners, and this device is normally impelled into upward non-latching position by means of a leafspring 4|. 7 v

Upon the insertion of a key into the key-hole ".the'flangeofthekeycontactsa slotltina lliderumountedinthecasing llaasbestshown inl igurestiiand 'handupon turningofthe kemthis is moved forwardly over a cammed projection ll on the element a, whereupon the lockug 'll pushed downwardly or outwardly. be, into locking relationship with- If. The structure 30 is best shaped asshowninl'lguresfland'lwhereinits forward 10 portion is bentintc somewhat U-shape, thereby 15 about a pin '2.

The whole device is extremely compact, while. at the same time. being simple and readily operated and will constitute quite an improvement over the present-day devices, as it may be used in situations hitherto thought impractical, as. for example, for fastening pockets or for ladies underwear, or in any other situations where the pull-tab would be either inconvenient or abso- Iamawarethatmanychangesmaybemade and numerous details of construction varied throughout a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than as necessitated by the prior art.

I claim as my invention:

1. A self-locking i r for multiple fasteners,

DISC LA' 2,071,'544.'Han- David Kroll, Lo '01 MULTIPLE FASTENERS. Patent March 30, 1938, .by the patentee.

Hereb disclaims from the scope of said Letters flic'ial Gazette May 24, {938.1

. slider, a locking projection mounted in the casing adapted to penetrate between adjacent fastener elements, and key-operated means for moving the projection into and out of such locking relationship, said key-operated means including a slide having a notch therein for engagement with a corresponding portion of the key, and a support integral with the locking projection, said support being adjacent the slide, and a cam-on the support in operative relationship with the slide.

5. A locking device for multiple fasteners, in

eluding a slider, a casing forming part of the slider, a locking projection mounted in the casing adapted to penetrate between adjacent fastener elements, and key-operated means for moving the projection intoand out of such locking relationship, said key-operated means including a slide having a notch therein for engagement with acct-responding portion of the key, and a support integral with the locking projection, said support being adjacent the slide, and a'cam on the support vin operative relationship with the slide, together with spring means for normally impelling the projection and its support into non-locking positiom 1 6. A duplex self-locking slider for multiple fasteners, including a slider body, a casing forming part of the slider body, a manually released locking projection in one side of the casing, and a key-operated locking element mounted in the other side of the casing, together with common spring means for the projection and locking elemerit.

. HARRY DAVID KROLL.

IMElR g es, Calif. SnLn-LocKING. SLIDER FOR...

ated-February 23, 1-937. Disclaimer filed Patent, claim 2 in toto.

hey, this a jection ll on the element a, whereupon the lock- ".the'iiangeiofthekeycontactsaslotltina lliderumountedinthecasingllaasbestshown inllgures4.6and7,andupon turningofthe is moved forwardly over a cammed proug 'll pushed downwardly or outwardly.

be, into locking relationship withif. Thestructureflisbestshaped asshowninl'iguresfland'lwhereinits forward portion is bentintc somewhat U-shape, thereby about a pin it. v

The whole device is extremely compact, while. at the same time. being simple and readily operated and will constitute quite an improvement over the present-day devices, as it may be used in situations hitherto thought impractical, as. for example, for fastening pockets or for ladies underwear, or in any other situations where the pull-tab would be either inconvenient or abso- Iamawarethatmanychangesmaybemade and nmnerous details of construction varied throughout a wide range without departing from the principles of this invention, and I, therefore, do not purpose limiting the patent granted hereon otherwise than as necessitated by the prior art.

I claim as my invention: 1. A self-locking i r for multiple fasteners, acasingformingpartoftheslidu,

and cam means on the pivoted element with the projection for the projection out of locking position. locking device for multiple fasteners. in-

sliderbody,acasingformingpartof slider body. a locking projection mounted in casing adapted to penetrate between adjacent fastener elements, and key-operated means slidin the casing for moving the projectioninto slider, a locking projection mounted in the casing adapted to penetrate between adjacent fastener elements, and key-operated means for moving the projection into and out of such locking relationship, said key-operated means including a slide having a notch therein for engagement with a corresponding portion of the key, and a support integral with the locking projection, said support being adjacent the slide, and a cam-on the support in operative relationship with the slide.

5. A locking device for multiple fasteners, in

cluding a slider, a casing forming part of the slider, a locking projection mounted in the casing adapted to penetrate between adjacent fastener elements, and key-operated means for moving the projection intoand out of such locking relationship, said key-operated means including a slide having a notch therein for engagement with acct-responding portion of the key, and a support integral with the locking projection, said support being adjacent the slide, and a'cam on the support vin operative relationship with the slide, together with spring means for normally impelling the projection and its support into non-locking positiom 1 6. A duplex self-locking slider for multiple fasteners, including a slider body, a casing forming part of the slider body, a manually released locking projection in one side 01' the casing, and a key-operated locking element mounted in the other side of the casing, together with common spring means for the projection and locking element.

. HARRY DAVID KROLL.

MULTIPLE FASTENERS. Patent March 30,1938, .by the patentee. Hereb disclaims from the scope of said Letters flic'ial Gazette May 24, {938.1

es, Calif. Sena-LOCKING. SLIDER FOR.

ated-February 23, 1-937. Disclaimer filed Patent, claim 2 in toto. 

